118 MR. MILLER CHRISTY ON THE 
No. of 
Obsvn. Date. Locality and Insect Visitors observed. 
11. May 1. | Wood at Yeldhum, Essex.— Another bright hot day. About noon, watched 
many large Bees at work on flowers, One (? Anthophora acervorum) visited 
many flowers of P. elatior X vulgaris quite constantly, Another 
(? Bombus hortorum) was far less constant, visiting (apparently quite 
indifferently) 18 flowers of P. elatior and P. elatior X vulgaris, but 
rejecting two flowers of pure P. elatior on one plant. 
12 & | April 8-12. | Woods (two) at Faläen and Sosoye, Belgium.— Watched, in company with 
13. Messrs. G. A. and E. Boulenger, a number of Bees (including Anthophora 
acervorum, Bombus lapidarius, and B. terrestris var, lucorum) busily at 
work on the Oxlips, whieh were abundant and in full flower in cut-down 
portions, 
1914. 
14. April 13. | Wood, Chignal St. James, Essex.— Watched a remarkably-inconstant large 
Humble Bee (Bombus sp.) visit 6 flowers of Narcissus and 2 of P. elatior 
(planted there by myself), all growing close together; after which he flew 
right away. 
1915. 
15. April 14. | Small wood, Saling, Essex,— Watched, in company with Mr. C. E. Salmon, 
various Hive Bees (Apis mellifica) busily visiting Oxlips growing in a boggy 
portion. One visited 16 flowers quite constantly before we lost sight of 
him. 
As to the OxLIP: no one, except myself (so far as I know), has observed 
its insect visitors in this country *; but the observations of both Müller + 
and Knuth {, made in Germany, are very full. Their lists are practically 
identical :— 
b 
HYMENOPTERA. 
Bombus hortorum L., g 9, abundant, sucking normally and collecting: 
pollen. 
Bombus sylvarum L., 9 , sucking normally. 
Bombus lapidarius L., 9, ditto. 
Bombus confusus L., ©, ditto. 
Bombus terrestris L., ©, ditto. 
Anthophora acervorum (L.), d 9 , abundant, sucking and collecting pollen. 
Osmia rufa (Le) } Both attempting k, b ing to d 
Apis mellifica L. pting to suck, but soon ceasing to do so. 
Andrena gwynana K., 9, abundant, collecting pollen from short-styled 
flowers (only). 
DIPTERA. 
Bombylius discolor Mg., abundant, sucking. 
Bombylius major (L.), much less frequent ; probably unable, in most cases, to 
reach the nectar, 
* Mr. C. Nicholson informs me that in Peverell’s Wood, Essex, in April 1914, he saw 
Bombus ruderatus Fabr. visiting it. 
+ ‘Fertilization of Flowers,’ pp. 384-385 (1883). 
t ' Flower Pollination,’ iii. p, 66 (1909). 
